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The JUN Super Piston Kit, manufactured by Cosworth in Britain, is designed for corresponding to high boost, high rotation and high response.

This is produced in purpose of reducing blow-by gas as well as boosting response up. The materials for this piston is the special aluminum for forging-use with manufacturing 400t press into the mold. Durability is just excellent.

Please look at the Jun Website for more information, including full specifications.